HMM ‘Mystery 101: Deadly History’ Review By Sarah Cudlipp August 4, 2021 10.37k 15 Comments Read More Tags: Deadly History, Deadly History Review, Hallmark, Hallmark Movies, Hallmark Movies and Mysteries, HMM, Jill Wagner, Kristoffer Polaha, Movies and Mysteries, Mystery 101, Mystery 101 Deadly History, Mystery 101 Deadly History Review, Mystery 101 Review, Review